Commensalism (One organism benefits while the other is not affected or harmed in any way)

Examples:

http://scienceline.org/2010/03/how-do-barnacles-attach-to-whales/

http://science.jrank.org/pages/1641/Commensalism.html

http://species-identification.org/species.php?species_group=fnam&menuentry=soorten&id=1382&tab=beschrijving - Celest

Mutualism (Both organisms benefit from the relationship)

Examples:
1. Clown fish and sea anemone
2- Shrimp and Goby fish (Goby looks out for shrimp as Shrimp digs a hole as shelter for Goby)
3- Aphids and ant (Aphids suck sap and leaves behind a sweet juice for ants while ants protect the aphids)

http://animal-world.com/encyclo/marine/wrasses/CleanerWrasse.php
http://www.necsi.edu/projects/evolution/co-evolution/mutualistic/co-evolution_mutualistic.html
Shrimp and Goby-
http://www.youtube.com/watch?v=dKuWlBjUFo8

Parasitism (One organism benefits while the other is harmed)

Examples:

1. Mosquito (Sucks blood)
2. Lice (Sucks blood)
3- Aphids (Sucks plant sap)
4- Leech/Tick (Also suck blood)
5) Cuckoo bird (Lays eggs in other birds' nests. When the chick hatches, it throws the other eggs out of the nest to smash on the floor.) - keane_ng Apr 26, 2014


Note: Parasitism may not immediately harm the host, some parasites will live in the host while some just cause diseases ~Ianzo

Dear all,

Please take a look at these videos:

http://www.youtube.com/watch?v=zSmL2F1t81Q

http://www.youtube.com/watch?v=WcQ5_zaJob0

http://www.youtube.com/watch?v=cjAuFyz8GJM

This video is really good as it covers the basics of symbiosis in 3 mins, tops. :) Please watch it:

http://www.youtube.com/watch?v=zTGcS7vJqbs

Thanks,

Linn